Pipeline lining mounting structure of desuperheater
By installing a baffle assembly in the desuperheater liner pipe, the problem of poor mixing effect in the liner pipe was solved, achieving more efficient mixing of steam and desuperheating water, and improving regulation accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-06
AI Technical Summary
The existing desuperheater liner tube has poor mixing effect, resulting in insufficient adjustment accuracy and stability.
The design employs a baffle plate assembly structure, including upper, middle, and lower baffle plates, each with a gradually decreasing horizontal angle. Reinforcing ribs are provided on the back of the baffle plates. The steam pipe and inner liner are connected by welding to form multiple mixing zones, thereby increasing the contact area and mixing efficiency of steam and desuperheating water.
It improves the mixing efficiency of steam and desuperheating water, enhances the adjustment accuracy and stability, and extends the service life.
Smart Images
Figure CN223976015U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of desuperheater technology and relates to the installation structure of desuperheater pipe lining. Background Technology
[0002] A desuperheater is a heat exchange device commonly used in power plant steam turbines or in steam applications in chemical, food, and other fields. Its main function is to reduce the temperature of steam or gas. In a steam system, the desuperheater uses water or other cooling media to absorb heat from the steam, lowering the steam temperature to the desired set value. A steam desuperheater liner is a structure that lines the inside of the desuperheater pipes. The liner forms a buffer layer between the inner wall of the desuperheater and the high-speed steam, protecting the steam pipes. However, existing liner systems have relatively poor mixing performance. Summary of the Invention
[0003] The purpose of this utility model is to provide a desuperheater pipe lining installation structure that can solve the problem of poor mixing effect of the lining pipe, and has better adjustment accuracy and stability.
[0004] According to the technical solution provided by this utility model: a desuperheater pipe lining installation structure includes a steam pipe, a desuperheating pipe and an inner lining pipe installed on the steam pipe, a nozzle installed in the desuperheating pipe, the nozzle being located in the inner lining pipe, and a guide plate assembly provided in front of the nozzle, the guide plate assembly being installed in the inner wall of the inner lining pipe; the guide plate assembly includes an upper guide plate, a middle guide plate, and a lower guide plate, respectively installed on the upper, middle, and lower parts of the inner wall of the inner lining pipe; the upper guide plate includes an upper inclined section, one end of which is connected to the inner wall of the inner lining pipe, and the other end is connected to an upper horizontal section; the middle guide plate includes a middle inclined section, one end of which is connected to the inner wall of the inner lining pipe, and the other end is connected to a middle horizontal section; the lower guide plate includes a lower inclined section, one end of which is connected to the inner wall of the inner lining pipe, and the other end is connected to a lower vertical section.
[0005] As a further improvement of this utility model, the horizontal included angle α of the upper inclined section, the horizontal included angle b of the middle inclined section, and the horizontal included angle c of the lower inclined section gradually decrease.
[0006] As a further improvement of this utility model, the horizontal included angle α of the upper inclined section is in the range of 60-65°.
[0007] As a further improvement of this utility model, the horizontal included angle b of the middle inclined section is in the range of 40-45°.
[0008] As a further improvement of this utility model, the horizontal included angle c of the lower inclined section is in the range of 30-35°.
[0009] As a further improvement of this utility model, reinforcing ribs are provided on the back of the upper guide plate, the middle guide plate, and the lower guide plate.
[0010] As a further improvement of this utility model, the steam pipe is connected to the inner lining pipe through a support plate.
[0011] As a further improvement of this utility model, the support plate is connected to the steam pipe and the inner lining pipe by welding.
[0012] As a further improvement of this utility model, a connecting flange is provided on the outer periphery of the steam pipe.
[0013] The positive and progressive effects of this application are as follows:
[0014] This utility model features a simple structure and modular design. Through precise design of the guide plate structure and installation arrangement, the mixing area of the desuperheating water and high-temperature steam is increased, thereby improving their mixing efficiency. This results in better cooling and temperature control performance, with improved adjustment precision and stability. It can be used in conjunction with various models of desuperheaters from our company. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a side sectional view of the distribution of the guide vane assembly of this utility model.
[0017] Figure 3 This is a front cross-sectional view of the distribution of the guide vane assembly of this utility model.
[0018] Figure 4 This is a schematic diagram of the upper guide plate of this utility model.
[0019] Figure 5 This is a schematic diagram of the structure of the guide plate in this utility model.
[0020] Figure 6 This is a schematic diagram of the structure of the lower guide plate of this utility model. Detailed Implementation
[0021] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units that have been clearly listed, but may include other steps or units that have not been clearly listed or are inherent to these processes, methods, products, or devices.
[0024] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.
[0025] like Figure 1 As shown, this utility model is a desuperheater pipe lining installation structure, including a steam pipe 2, a desuperheating pipe 1 and an inner lining pipe 5 installed on the steam pipe 2, a nozzle 4 installed in the desuperheating pipe 1, the nozzle 4 being located in the inner lining pipe 5, and a guide plate assembly provided in front of the nozzle 4, the guide plate assembly being installed in the inner wall of the inner lining pipe 5.
[0026] like Figures 2-3 As shown, the guide vane assembly includes an upper guide vane 3-1, a middle guide vane 3-2, and a lower guide vane 3-3, which are respectively installed on the upper, middle, and lower parts of the inner wall of the inner liner tube 5.
[0027] like Figure 4 As shown, the upper guide plate 3-1 includes an upper inclined section 3-11, one end of which is connected to the inner wall of the inner liner tube 5 by welding, and the other end is connected to the upper horizontal section 3-12. The horizontal included angle α of the upper inclined section 3-11 is between 60° and 65°.
[0028] like Figure 5 As shown, the central guide plate 3-2 includes a central inclined section 3-21, one end of which is connected to the inner wall of the inner liner tube 5 by welding, and the other end is connected to the central transverse section 3-22. The horizontal included angle b of the central inclined section 3-21 is between 40° and 45°.
[0029] like Figure 6 As shown, the lower guide plate 3-3 includes a lower inclined section 3-31, one end of which is connected to the inner wall of the inner liner tube 5 by welding, and the other end is connected to the lower vertical section 3-32. The horizontal included angle c of the lower inclined section 3-31 is between 30° and 35°.
[0030] The horizontal angles a, b, and c gradually decrease. A suitable elevation angle is designed based on the flow rates and velocities of the high-temperature steam and the desuperheating water to improve mixing efficiency.
[0031] The baffle assembly features a multi-plate design, installed in a staggered, triangular pattern. One or more rows can be installed, creating multiple mixing zones to ensure full contact between steam and desuperheating water within the pipe.
[0032] The upper guide plate 3-1, the middle guide plate 3-2, and the lower guide plate 3-3 are equipped with reinforcing ribs on their backs to optimize structural strength, improve product stability, and extend service life.
[0033] Steam pipe 2 is connected to inner lining pipe 5 via support plate 7. Support plate 7 is connected to steam pipe 2 and inner lining pipe 5 by welding process.
[0034] The steam pipe 2 is equipped with a connecting flange 6 on its outer periphery for installing the desuperheating pipe 1. The inner lining pipe 5 has a through hole for the desuperheating pipe 1 to pass through.
[0035] The working process of this utility model is as follows:
[0036] Desuperheating water enters steam pipe 2 through nozzle 4 and mixes with high-temperature steam in steam pipe 2. The desuperheating water absorbs heat and vaporizes, cooling the high-temperature steam to the temperature required by the system.
[0037] Combination Figure 2 The inner lining pipe structure of this utility model consists of an inner lining pipe 5 and multiple sets of guide plates. This creates multiple staggered flow paths within the pipe. This design significantly increases the contact area between steam and desuperheating water, allowing for more thorough heat and mass exchange and achieving rapid and uniform mixing. The guide plates create strong turbulence between the steam and desuperheating water within the pipe. The guide plates are designed at different angles, such as... Figure 3 As shown, the angle design of the baffle plate guides the fluid to form vortices within the pipe. These vortices enhance fluid mixing, creating more complex flow patterns between the steam and desuperheating water, thus further improving mixing efficiency.
[0038] The spacing and angle of the baffles need to be precisely calculated to optimize the mixing effect of steam and desuperheating water. A reasonable spacing ensures that steam and desuperheating water form turbulence between the baffles, increasing the contact area; while an appropriate angle can guide the fluid to form vortices within the pipe, further improving mixing efficiency.
[0039] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.
Claims
1. An attemperator pipe inner liner installation structure characterized by, The steam pipeline (2) is provided with a desuperheating pipeline (1) and an inner lining pipeline (5), the nozzle (4) is arranged in the desuperheating pipeline (1), the nozzle (4) is arranged in the inner lining pipeline (5), the guide plate group is arranged in front of the nozzle (4), and the guide plate group is arranged on the inner wall of the inner lining pipeline (5); the guide plate group comprises an upper guide plate (3-1), a middle guide plate (3-2) and a lower guide plate (3-3) which are arranged on the upper portion, the middle portion and the lower portion of the inner wall of the inner lining pipeline (5) respectively; the upper guide plate (3-1) comprises an upper inclined section (3-11) which is connected with the inner wall of the inner lining pipeline (5) at one end and connected with an upper horizontal section (3-12) at the other end; the middle guide plate (3-2) comprises a middle inclined section (3-21) which is connected with the inner wall of the inner lining pipeline (5) at one end and connected with a middle horizontal section (3-22) at the other end; and the lower guide plate (3-3) comprises a lower inclined section (3-31) which is connected with the inner wall of the inner lining pipeline (5) at one end and connected with a lower vertical section (3-32) at the other end.
2. The boiler tube installation structure according to claim 1, wherein The horizontal included angle a of the upper inclined section (3-11), the horizontal included angle b of the middle inclined section (3-21) and the horizontal included angle c of the lower inclined section (3-31) gradually decrease.
3. The boiler tube installation structure according to claim 2, wherein The horizontal included angle a of the upper inclined section (3-11) ranges from 60 to 65 degrees.
4. The boiler tube installation structure according to claim 3, wherein The horizontal included angle b of the middle inclined section (3-21) ranges from 40 to 45 degrees.
5. The boiler tube installation structure according to Claim 1, wherein The horizontal included angle c of the lower inclined section (3-31) ranges from 30 to 35 degrees.
6. The boiler tube installation structure according to Claim 1, wherein The upper guide plate (3-1), the middle guide plate (3-2) and the lower guide plate (3-3) are provided with reinforcing ribs at the back thereof.
7. The boiler tube installation structure according to Claim 1, wherein The steam pipeline (2) is connected with the inner lining pipeline (5) through a support plate (7).
8. The boiler tube installation structure according to claim 7, wherein The support plate (7) is connected with the steam pipeline (2) and the inner lining pipeline (5) through a welding process.
9. The boiler tube installation structure according to Claim 1, wherein The steam pipeline (2) is provided with a connecting flange (6) on the outer periphery thereof.